Problems

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
0-1 Sequences	4460	673	15%	0.01	885	458	52%	7.2
10 Kinds of People	7602	1592	21%	0.01	1323	902	68%	5.5
2048	5168	2469	48%	0.00	2348	2012	86%	2.2
3D Printed Statues	4079	1974	48%	0.00	1857	1668	90%	2.0
3D Printer	363	72	20%	0.00	122	62	51%	7.2
3-Sided Dice	1498	110	7%	0.00	237	84	35%	8.7
4 thought	4678	1569	34%	0.00	1574	1309	83%	2.9
A1 Paper	3238	949	29%	0.00	931	728	78%	3.6
Aaah!	15898	7704	48%	0.00	6805	6327	93%	1.5
Abandoned Animal	913	162	18%	0.03	201	143	71%	5.2
ABC	5714	2639	46%	0.00	2526	2294	91%	1.7
Above Average	2648	1147	43%	0.00	1176	1058	90%	1.9
A+B Problem	4310	392	9%	0.04	636	212	33%	8.4
A Brief Gerrymander	111	25	23%	0.15	26	17	65%	7.0
Abstract Art	187	45	24%	0.00	43	31	72%	6.9
Absurdistan Roads II	484	172	36%	0.00	165	111	67%	6.9
Absurdistan Roads III	1144	295	26%	0.02	285	207	73%	6.0
A Classy Problem	5306	1434	27%	0.01	1205	940	78%	4.0
ACM Contest Scoring	4272	2651	62%	0.00	2324	2194	94%	1.5
Adding Words	5515	1237	22%	0.00	1316	1003	76%	3.9
A Different List Game	4861	347	7%	0.00	599	116	19%	9.2
A Different Problem	18223	7111	39%	0.00	6556	5687	87%	2.3
Adjoin the Networks	1340	350	26%	0.00	309	235	76%	6.0
Administrative Difficulties	578	126	22%	0.03	160	99	62%	6.6
Advanced Causal Measurements	30	10	33%	0.10	12	10	83%	6.2
Adventures in Moving -- Part IV	596	189	32%	0.00	176	149	85%	4.7
A Favourable Ending	972	213	22%	0.00	233	160	69%	5.1
A Feast For Cats	1070	383	36%	0.19	261	212	81%	5.0
Air Conditioned Minions	2648	736	28%	0.00	810	592	73%	4.5
Airline Hub	1330	226	17%	0.01	261	141	54%	7.0
Airport Coffee	668	144	22%	0.09	134	103	77%	6.3
Airport Construction	2548	337	13%	0.02	261	136	52%	7.3
Airport Logistics	45	10	22%	0.00	16	10	62%	7.7
Airports	240	74	31%	0.13	72	53	74%	6.3
Akcija	3785	1641	43%	0.01	1466	1285	88%	2.0
Aladin	677	59	9%	0.10	103	19	18%	8.9
Alchemy	92	13	14%	0.03	25	13	52%	8.1
Alea iacta est	29	11	38%	0.34	14	11	79%	6.9
Alice in the Digital World	1330	333	25%	0.01	362	271	75%	4.3
Alien Numbers	1510	773	51%	0.00	756	678	90%	2.1
A List Game	5271	1571	30%	0.00	1505	1256	83%	3.0
All about that base	2296	902	39%	0.00	859	722	84%	2.7
All Different Directions	735	326	44%	0.00	301	263	87%	2.6
Allergy Test	296	98	33%	0.00	90	49	54%	8.1
All Friends	706	133	19%	0.00	114	58	51%	9.0
All Just A Dream	1107	247	22%	0.05	186	132	71%	6.2
All Pairs Shortest Path	5692	973	17%	0.02	665	462	69%	5.5
Almost Perfect	4108	935	23%	0.00	1009	784	78%	3.6
Almost Union-Find	4392	708	16%	0.02	671	358	53%	7.0
Alphabet	591	294	50%	0.00	301	256	85%	2.8
Alphabet Spam	4335	2786	64%	0.00	2089	2005	96%	1.4
Alternative Bracket Notation	190	79	42%	0.00	83	69	83%	5.3
Altruistic Amphibians	213	48	23%	0.25	52	32	62%	7.1
Amalgamated Artichokes	2997	1348	45%	0.01	1194	1039	87%	2.6
Amanda Lounges	1110	303	27%	0.03	269	207	77%	5.7
A Mazing!	1209	295	24%	0.09	136	101	74%	5.3
Amazing Race	253	65	26%	0.39	72	52	72%	6.6
Ambiguous Result	188	43	23%	0.03	65	41	63%	7.8
Amsterdam Distance	798	316	40%	0.00	359	286	80%	2.7
A Multiplication Game	263	63	24%	0.00	87	60	69%	5.9
Anagram Counting	2162	831	38%	0.00	808	667	83%	3.1
Andrew the Ant	185	48	26%	0.06	61	44	72%	5.4
A New Alphabet	7451	3401	46%	0.00	3200	2964	93%	1.8
Animal Classification	1232	253	21%	0.03	242	150	62%	6.9
An Industrial Spy	1180	611	52%	0.02	467	402	86%	3.2
Another Brick in the Wall	1594	831	52%	0.00	813	739	91%	2.0
Another Candies	5237	1418	27%	0.00	1497	1228	82%	2.8
Another Dice Game	80	59	74%	0.00	51	48	94%	3.4
Another Query on Array Problem	989	125	13%	0.05	218	92	42%	7.6
Anthony and Cora	608	149	25%	0.00	179	121	68%	5.8
Anthony and Diablo	1319	459	35%	0.00	517	439	85%	2.6
Antiarithmetic?	793	128	16%	0.01	211	102	48%	8.0
Ants	1797	823	46%	0.00	614	539	88%	2.5
Apaxiaaaaaaaaaaaans!	7333	4498	61%	0.00	4047	3890	96%	1.3
Apparatus	574	150	26%	0.01	113	86	76%	5.3
Apple Market	429	85	20%	0.07	95	51	54%	7.5
Apples, Cherries, and Mangos	327	101	31%	0.02	95	72	76%	6.6
Aquarium Tank	353	103	29%	0.00	92	72	78%	5.6
Aqueduct Construction	112	37	33%	0.01	33	27	82%	7.0
A Question of Ingestion	751	173	23%	0.00	172	128	74%	5.7
Arable Area	223	50	22%	0.04	52	32	62%	7.8
A Rational Sequence	1069	344	32%	0.00	384	270	70%	5.3
A Rational Sequence 2	1177	854	73%	0.00	792	753	95%	1.6
A Rational Sequence (Take 3)	485	413	85%	0.00	301	293	97%	1.7
Arbitrage?	1649	317	19%	0.02	235	187	80%	3.6
Arcade!	1112	199	18%	0.01	191	136	71%	6.2
Arctic Network	1085	386	36%	0.00	323	258	80%	4.6
A Real Challenge	4387	2140	49%	0.00	2092	1953	93%	1.6
Area of Effect	79	9	11%	3.16	14	7	50%	8.0
Arithmetic	1575	456	29%	0.00	457	356	78%	3.6
Army Strength (Easy)	2431	1243	51%	0.00	1119	1008	90%	2.0
Army Strength (Hard)	3047	1553	51%	0.01	1088	963	89%	2.4
Around and Around We Go	34	11	32%	0.00	20	10	50%	8.5
Around the track	38	8	21%	0.01	15	6	40%	8.8
Around the Track	261	33	13%	0.00	52	23	44%	8.3
Arranging Hat	228	89	39%	0.05	85	73	86%	5.2
Arranging Wine	154	42	27%	0.03	44	33	75%	4.9
Arriving on Time	174	56	32%	0.04	54	43	80%	6.4
Artur	291	65	22%	0.06	75	48	64%	6.7
Artwork	817	290	35%	0.06	256	165	64%	6.1